Doefee



(No Model.)

v 0. W. BOMAN.- Y LEAD AND ORAYON HOLDER.

No.244,429. --Patented Ju1y19,1881.

n. PETERS. vnmmho n w. Wuhlnghm v.0

Unrrsn STATES PATENT OFFICE.

OLAES W. ROMAN, OF NEW YORK, N. Y., ASSIGNOR TO JOSEPH REOKEN- DORFER, OF SAME PLACE.

LEAD AND CRAYON HOLDER.

SPECIFICATION forming part of Letters IlPatent No. 244,429, dated July 19, 1881,

Application filed April 28, [881. No model.)

To all whom it may concern:

Be it known that I, CLAES W. BOMAN, of

the city, county, and State of New York, have invented certain new and useful Improvements in Lead and Crayon Holders, of which the following is a specification.

' My invention relates to that class of lead and crayon holders in which an expansible lead clamp or grasping device is caused to close upon the lead or crayon by means of a collar, tip, or nozzle surrounding said clamp, the two being movable with respect to one another in order to cause the clamp, according to the direction of movement, either to close upon or to relax its hold on the lead.

The clamp or grasping device which I prefer consists of expan sible jaws carriedby or formed on the lead-containin g tube, and at some point within the tip or nozzle of the pencil sheath or case I form an opening of irregular diameter or size, so that by a rotary movement of the jaws with respect to the part which surrounds them said jaws may be brought between either those sides of said opening which are near enough to one another to press the jaws together on the lead or those sides which are far enough apart to permit the jaws to expand sufficiently to release the lead; and with these parts I prefer to combine a spring, which, like the spring of an automatic lead and crayon holder, normally keeps the'partsin a position in which the jaws are closed.

The nature of my invention and the manner in which the same isor may be carried into effect will be understood by reference to the accompanying drawings, in which- Figure 1 is a perspective view, and Fig. 2 is a longitudinal central section, of one form of lead and crayon holder embodying my invention. Fig. 3 is a view of the device which acts on the lead-clamp or graspingjaws. Fig. 4is a view of the lead-holdin g tube and jaws thereon. The remaining figures illustrate another form of holder, to be hereinafter referred to.

A is the sheath or handle, which contains the lead-holding tube B. The handle in this instance is made in two parts or sections, united by a sleeve, 01, fixed on the rear section, so as to cover the jointbetween the two sections, and

provided with an internally-projecting pin or at the front fora certain distance. the split portion forming spring-jaws e, which normally stand apart a sufficient distance to leave the lead f free. Within and fixed to the tip, and surrounding the tube, is a ring or collar, 9, the opening through which is of elliptical shape, as seen in Fig. 3. -The jaws in cross-section have a shape approximating the ring or collar, so that the ring will exert closing pressure on thejaws only when the latter are brought between the longer faces oftheelliptical collar in the plane of their vibratory movement.

The operation of the device is as follows: When the one handle-section is turned with respect to the other to the limit of the slot 0 in one dlIGOtlOIly'tllG jaws c (which have rotary movement with respect to the part y) will be pressed together between the interior faces, 1,

of the elliptical collar, and will be caused to close upon and clamp the lead f. When, after this, thejsect-ions are rotated in the opposite direction with respect to one another, the jaws will be brought opposite the more widely separated faces 2 of the collar, and in this position can expand far enough to release the lead.

With respect to the faces 2, I remark that they are not at all necessary, inasmuch as if they were taken away the tip or nozzle d. would prevent the jaws from expanding unduly. The essential feature is the compressing faces or ribs or bars 1, placed in such proximity to one another as to act on the jaws in the manner hereinbefore specified.

It is manifest that the principle of operation illustrated in the holder just described can be carried into effect in various ways. A divided handle may be dispensed with, and the tube can be attached to and operated by a rotary cap mounted on the rear end of the handle, and connected thereto much in the same way as I have shown the handle-sections connected together. I can also make the holder an automatic in action. Such a modification is represented in Figs. 5 to 7, inclusive. Fig. 5 is a perspective View, and Fig. 6 is a longitudinal central section,of the holder. Fig. 7 is a perspective view of the sheath and pressure-cap detached from one another.

The sheath A is in one piece, instead of being sectional. The lip d and elliptical collar 9 within it are the same as hereinbefore described. Within the sheath is supported in proper bearing the lead-holding tube B, so that it may be capable of rotating without longitudinal movement. It is provided with jaws e, which are combined to operate with the parts dand g, in the manner hereinbefore described.

The rotary movement of the tube is obtained as follows: To the rear of the sheath is fastened a cap, h, in which is formed a quartercircle slot, 1', in a plane transverse to the axis of the holder, and through this slot projects a pin, j, from the rear end of the tube within. Fitting upon the cap it is what is ordinarily known in automatic pencils as a pressurecap, 0, within which is a spiral retractingspring, 8, interposed between the end of the sheath or cap h and the head of the pressurecap. In the pressure-cap is formed a spiral or inclined slot, 7;, which is entered by the pin j; and,in order to insure that the pressure-cap shall move back and forth in a right line, it is provided with a pin, 1, which enters a longitudinal slot, m, of proper length,formed in the sheath orits cap h. The springnormally pushes back the pressure-cap, so that the pin j will be at the bottom of slot k, and also at one extreme of the cross-slot i. In this (which is the normal) position of the parts the jaws are in their closed position. The pressure-cap,when moved forward by hand, being compelled to move in a right line by reason of its connection with 'the sheath, causes, by means of its inclined slot k, the pin j to travel to the other extreme of cross-slot 2', thus giving the tube, and of course the jaws connected therewith, a quarterturn, and consequently bringing the jaws to a position where they are free to expand and release the lead. When pressure on the pressure-cap is removed the spring instantly throws the cap back, and thus returns the parts to their normal position.

I have described one convenient way of obtaining the automatic return of the lead-clamp to its closed position; but it is manifest that various other means within the knowledge of the mechanic may be adopted for the purpose.

I remark, in conclusion,that I am aware that lead and crayon holders before this have been made in which the lead-clamp and the part designed to act on the same in order to cause it to close on the lead have been capable of rotary movement with respect to one another; but in all such cases heretofore of which I have knowledge the said parts for this purpose have had not only a rotary but simultaneously a longitudinal movement also relatively to each other.

Having described my improvement, what I claim, and desire to secure by Letters Patent, 1s-

1. In a lead and crayon holder, the combination of an expansible lead-clamp and a compressing-collar of elliptical or equivalent form, as described, said parts being arranged to have rotary movement with respect to one another, substantially as and for the purpose set forth.

2. The combination of the sheath or handle, the tip or nozzle provided with compressingfaees, as described, and the lead-holding tube arranged to have rotary movement with re spect to the tip, and carrying expansible leadclamping jaws extending between said compressing-faces,the combination being and actin g substantially as hereinbefore set forth.

3. The combination of the sheath or handle, the tip provided with compressing-faces, as described, the rotary lead containing tube mounted in said sheath and provided with lead-clam ping jaws extending between thesaid compressin g-faces, the ion gitudinally-movable pressure-cap connected with the lead-tube, substantially as herein described, so as to impart rotary movement thereto, and the retracting-spring, substantially as hereinbefore set forth.

In testimony whereof I have hereunto set my hand this 21st day of April, 1881.

OLAES W. BOMAN.

Witnesses:

LEOPOLD ANSBASHER, E. A. DIoK. 

